Need a sock for a fuel pump of mine

bought a fuel pump from a friend of mine who went turbo he kept the old sock to fit his new fuel pump where could i find a sock to fit this. its for a 91 crx. ive tried all the local import shops but no luck they say its simular to a mustang sock but even some of the demostic racing shops cant get them havent tried all but atleast 2 couldnt get them.